Valve for radiators.



E. D. PEERSTONE. VALVE FOR RADIATORS. APPLICATION FILED MAR. I6. 1911.

Patented Oct. 2, 1917.

JnvGhzor {AA 0 N M Q M Z a M6 W WW 1 M v a 1 @N mxamw v f EARL D.PEERSTONE, OF CHICAGO, ILLINOIS.

VALVE FOR BADIATORS.

Specification of Letters Patent.

Patented Oct. 2, 1917.

Application flled March 16, 1917. Serial No. 155,214.

' To all whom it may concern:

Be it known that l, EARL I). PEERSTONE, a citizen of the United States,residing in Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Valves for Radiators, of whichthe following is a specification, reference being had to theaccompanying drawings, forming a part thereof.

' This improvement is designed for the purpose of providing a quickerand more convenient means for controlling the supply of steam to theradiator. It is designed to be operated by a persons foot, both to openand close, and is so constructed that the valve will always be eitherfully open or closed, thereby preventing what is known as a, crackedvalve, which is a term applied to a valve that is slightly open,permitting steam to enter but preventing the return of the water, whichaccumulates in the radiator and may cause either water-hammer orflooding.

The valve consists of a casing, 1, having an opening, 1, for theadmission of steam from the supply pipe, and an opening, 1*, for thepassage of steam to the radiator. A bonnet, 2, closesthe top of thecasing and has a recessed space, 2, for receiving the packing,

3, which is secured in place by a packing nut, 4. A stool, 5, whichseats on a shelf, 2", formed on the bonnet, 2, serves to support acatch, 6, by means of lugs, 7, a spring, 8, serving to maintain thecatch in operative position, the catch being designed to engage ashoulder, .9, formed on the valve stem, 9, when the valve is in closedposition, as shown in ,Fig. 1.- A collar, 10, attached to the bonnet, 2,serves to secure the stool, 5, which is adjustable in position so thatthe tread, 6, formed on the outer end of the catch, 6, may be set in aconvenient position to operate. A cap, 11, attached to the upper end ofthe valve stem, 9, serves as a tread to close the valve. A valve disk,12-, is loosely hung on the lower end of the valve stem, 9, by means ofa collar, 13, so as to provlde a certain amount of lost motion.

A collar, 14, attached to the valve stem, 9, serves to engage the upperend of two springs, 15, and 16. The'lower end of the spring 15 seats onthe. bottom of the casing, and this spring is employed to raise thevalve stem and the valve disk to open position, as shown in Fig. 2, whenthe catch, 6,

stem is pushed inward by the pressure of a persons foot it must travelfar enough to allow the catch, 6, to engage its seat, 9. When the stemreaches its extreme inward position in the closing of the valve theshoulder, 9 is spaced inwardly of the catch, 6, thus making possible aslight back kick of the stem. When the pressure is relieved the stem hasa slight upward or outward movement, until the catch becomes effective,and it is this slight back kick that necessitates a yielding resistancemeans to seat the valve disk before the shoulder on the valve stem inits inward movement clears the catch, and to keep the valve disk seatedafter the stem ln'cks back. It is of course, necessary to have thisspring of suflicient tension to resist the pressure of steam against thelower face of the disk.

Having thus described my invention, I claim 1. A valve device comprisinga casing, a valve disk, a valve stem for operating the valve disk,having an inward movement after the valve disk is seated to permit acatch to engage the valve stem and having a subsequent slight outwardmovement after the catch has passed into engaging position,

and a catch for securing the valve stem to prevent further outwardmovement of the same.

2. A valve device comprising a casing, a valve disk, a valve stem foroperating the valve disk, having an inward movement after the valve diskis seated to permit a catch to engage the valve stem and having asubsequent slight outward movement after the catch has passed intoengaging position, a catch for securing the valve stem to preventfurther outward movement of the same, and yielding resistance means foropposing the inward movement of the valve stem.

3. A valve device comprising a casing, a valve disk, a valve stem foroperating the valve disk, having an inward movement after the valve diskis seated to permit a catch to engage the valve stem and having asubsequent slight outwart movement afterthe catch has passed intoengaging position, a catch for securing the valve stem to preventfurther outward movement of the same, and a tread for releasing thecatch. D 0 4. A valve devlce comprising a casing, a

5 valve disk, a valve stem for operating the valve disk, having aninward movement after the valve disk is seated to permit a catch toengage the valve stem and having a subsequent slight outward movementafter 10 the catch has passed lnto engaging position,

yielding resistance means interposed between the valve stem and thevalve disk to hold EA'RL D. PEERSTONE.

Witnesses:

CAROLINE PEERsToNE, Com B. PEERSTONE.

